/* Catalog Browser tool -- centered modal + 4-column drill layout.
 * Mounts inside the platform tool overlay (.tool-overlay-container, z:8000).
 * All colours use canonical CSS tokens so both themes inherit via the
 * shared chain. Phone breakpoint stacks the columns vertically.
 */

/* ---------- Modal shell ---------- */

.cb-modal {
  width: min(1320px, 96vw);
  height: min(840px, 92vh);
  margin: auto;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: inherit;
  color: var(--text-primary);
}

.cb-modal-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}

.cb-modal-title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--text-primary);
}

.cb-modal-search {
  flex: 1;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
}

.cb-modal-search:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.cb-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 4px 2px 8px;
}

.cb-toggle-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}

.cb-toggle-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
}
.cb-toggle-btn:hover { color: var(--text-primary); }
.cb-toggle-btn-active {
  background: var(--accent-soft);
  color: var(--text-primary);
}

.cb-modal-close {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 6px;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cb-modal-close:hover { background: var(--row-hover); color: var(--text-primary); }

.cb-modal-body {
  flex: 1;
  display: grid;
  grid-template-columns: 220px 280px 320px minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.cb-modal-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
}

.cb-modal-help { flex: 1; font-size: 12px; color: var(--text-tertiary); }
.cb-modal-status { font-size: 11px; color: var(--text-tertiary); }

/* ---------- Drill columns ---------- */

.cb-col {
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--panel);
  position: relative;
}

.cb-col::before {
  content: attr(data-cb-col-label);
  display: block;
  padding: 10px 12px 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  position: sticky;
  top: 0;
  z-index: 1;
}

.cb-col-list {
  list-style: none;
  margin: 0;
  padding: 4px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.cb-col-list li { margin: 0; }

.cb-col-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
}

.cb-col-item:hover { background: var(--row-hover); border-color: var(--border); }

.cb-col-item-selected {
  background: var(--accent-soft);
  border-color: var(--accent-line);
}

.cb-col-item-current { border-color: var(--accent-line); }

.cb-col-item-label {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cb-col-item-mfr {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}

.cb-col-item-name {
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
}

.cb-col-item-sub {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  word-break: break-word;
}

.cb-col-pip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.cb-create-btn {
  appearance: none;
  width: calc(100% - 16px);
  margin: 8px;
  padding: 8px 10px;
  border: 1px dashed var(--border-strong);
  background: var(--input-bg);
  color: var(--text-primary);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}
.cb-create-btn:hover {
  background: var(--row-hover);
  border-color: var(--accent);
  color: var(--text-primary);
}

.cb-create-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
}
.cb-create-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cb-create-field label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}
.cb-create-field input {
  font-size: 13px;
}
.cb-create-error {
  margin: 0;
  padding: 6px 8px;
  background: var(--error-soft);
  color: var(--error);
  border-radius: 4px;
  font-size: 12px;
}
.cb-create-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 4px;
}

.cb-col-thumb {
  display: inline-block;
  width: 36px;
  height: 36px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  object-fit: cover;
  flex-shrink: 0;
}
.cb-col-thumb-loading {
  background: linear-gradient(var(--row-hover), var(--row-hover)), var(--panel-2);
}
.cb-col-thumb-empty {
  border-style: dashed;
  opacity: 0.45;
}

.cb-col-empty {
  padding: 18px 14px;
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: center;
  line-height: 1.5;
}

.cb-col-search-hint { text-align: left; font-size: 11px; }

/* ---------- Right pane ---------- */

.cb-right {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--panel-2);
}

.cb-right-toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}

.cb-right-toggle {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}
.cb-right-toggle:hover:not(:disabled) { background: var(--row-hover); border-color: var(--border-strong); }
.cb-right-toggle:disabled { opacity: 0.5; cursor: not-allowed; }

.cb-right-body {
  flex: 1;
  overflow: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------- Cards (Current + Candidate) ---------- */

.cb-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cb-card-current { border-color: var(--accent-line); }

.cb-card-empty {
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 120px;
  border-style: dashed;
  background: transparent;
}

.cb-card-empty-msg { margin: 0; color: var(--text-tertiary); font-size: 12px; }

.cb-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.cb-card-head h3 {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.cb-card-mfr {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}

.cb-card-thumb-wrap {
  display: flex;
  justify-content: center;
}
.cb-card-thumb {
  width: 100%;
  max-width: 200px;
  max-height: 160px;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel-2);
}

.cb-card-part {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word;
}

.cb-card-family {
  font-size: 12px;
  color: var(--text-secondary);
}

.cb-card-attrs {
  margin: 4px 0 0;
  display: grid;
  grid-template-columns: minmax(110px, max-content) minmax(0, 1fr);
  gap: 4px 12px;
}
.cb-card-attrs > div { display: contents; }
.cb-card-attrs dt { margin: 0; font-size: 11px; color: var(--text-tertiary); }
.cb-card-attrs dd { margin: 0; font-size: 12px; color: var(--text-primary); word-break: break-word; }

.cb-card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  white-space: pre-wrap;
}

.cb-card-price {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-top: 1px dashed var(--border);
  padding-top: 8px;
  margin-top: 4px;
}
.cb-card-price span {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}
.cb-card-price strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ---------- Compare table ---------- */

.cb-cmp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.cb-cmp-table thead th {
  background: var(--panel);
  border-bottom: 1px solid var(--border-strong);
  text-align: left;
  padding: 6px 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}
.cb-cmp-table tbody th {
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  white-space: nowrap;
  width: 35%;
  background: var(--panel);
}
.cb-cmp-table tbody td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  word-break: break-word;
  vertical-align: top;
}
.cb-cmp-diff td,
.cb-cmp-diff th { background: linear-gradient(var(--accent-soft), var(--accent-soft)), var(--panel); }
.cb-cmp-blank { color: var(--text-tertiary); }
.cb-cmp-section th {
  background: var(--panel);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  padding: 8px 8px 4px;
  border-bottom: 1px solid var(--border-strong);
}

/* ---------- Auto-fill SKUs: configure / previously used ---------- */

.cb-sku-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  position: sticky;
  top: 0;
  z-index: 1;
}

.cb-sku-header-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}

.cb-configure-btn {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
}

.cb-sku-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px 16px;
  text-align: center;
  color: var(--text-tertiary);
}

.cb-sku-empty-msg {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ---------- Multi-component bundle grouping ---------- */

.cb-bundle-list .cb-bundle-group {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--border);
}

.cb-bundle-leader {
  /* Leader picks read like a section header within the group. */
  background: var(--row-hover);
}

.cb-bundle-children {
  list-style: none;
  margin: 0;
  padding: 0 0 0 16px;
  border-left: 2px solid var(--accent-line, var(--border-strong));
  margin-left: 12px;
}

.cb-bundle-role {
  display: inline-block;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  padding: 1px 5px;
  margin-left: 6px;
  border-radius: 3px;
  vertical-align: middle;
}

.cb-bundle-role-leader {
  background: var(--accent-soft);
  color: var(--accent);
}

.cb-bundle-role-child {
  background: var(--row-alt);
  color: var(--text-tertiary);
}

.cb-bundle-unbundled-head {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  padding: 8px 10px 4px;
  border-top: 1px solid var(--border);
}

.cb-sku-empty-sub {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ---------- Phone-stack layout ---------- */

@media (max-width: 900px) {
  .cb-modal { width: 100vw; height: 100vh; border-radius: 0; border: none; }
  .cb-modal-body {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(120px, 1fr) minmax(120px, 1fr) minmax(120px, 1fr) minmax(180px, 1.5fr);
  }
  .cb-col, .cb-right { border-right: none; border-bottom: 1px solid var(--border); }
}

@media (max-width: 640px) {
  .cb-modal-search { font-size: 16px; }
  .cb-modal-head { flex-wrap: wrap; }
}